« #2 : January 27, 2017, 02:56:15 AM »
Did you allow Achat access through your Firewall - your own Security & Windows Firewall ?
Windows kicks in automatically when you turn your own off and can delete some upgrades immediately once installed as malware (malicious software)
You will have to uninstall everything to do with Achat and install everything again, just to make sure.
Good look, let us know how you get on.